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SAM-BA AT91SAMS vs AT91SAM7X

Started by francach October 12, 2009
Hi,

I was using the AT91SAM7X256-EK and am now asked to switch to the development kit for the AT91SAM7S256 (from the 'X' to the 'S' variant). I read in the AT91SAM-PROG User Guide that the way SAM-BA boot mode works on the SAM7Sxxx variant is different to the way it works on the SAM7Xxxx variant of the uC.
Somehow I can't believe that Atmel would have done this. Can it be that the doc. is wrong? When I have the kit I'll test it out of course, but it does mean a pcb change if it's true.
Thanks for any info,

F.

Yes they are different.

The SAM7Xxxx is the never and better variant, so the switch Atmel did was in the "right" direction :)

You you are going to reprogram the SAM7xxx often for experimentation then you should really consider using flash programming through JTAG. For the SAM7Xxxx SAM-BA is OK.

Magnus
--- In A..., "francach" wrote:
>
> Hi,
>
> I was using the AT91SAM7X256-EK and am now asked to switch to the development kit for the AT91SAM7S256 (from the 'X' to the 'S' variant). I read in the AT91SAM-PROG User Guide that the way SAM-BA boot mode works on the SAM7Sxxx variant is different to the way it works on the SAM7Xxxx variant of the uC.
> Somehow I can't believe that Atmel would have done this. Can it be that the doc. is wrong? When I have the kit I'll test it out of course, but it does mean a pcb change if it's true.
> Thanks for any info,
>
> F.
>